ONLINE HELP
 WINDEVWEBDEV AND WINDEV MOBILE

Version: 2025

NULL values in HFSQL
WINDEV, WEBDEV and WINDEV Mobile allow you to manage the NULL value in the items of the HFSQL data files and for all the other types of accesses (Native, OLE DB, ...
Max (Function)
Returns the greatest value passed as parameter.
<ANSI string>.ToNum (Function)
Returns the numeric value of a character string. This feature enables you to perform numeric calculations on strings.
<Source>.BuildKeyValue (Function)
Builds the value of a composite key to implement a filter (HFilter) or to perform a search (HReadSeekFirst, HReadSeekLast, etc.).
HBuildKeyValueANSI (Function)
Whatever the platform used, the data stored in HFSQL data files is in ANSI format.
StringToNum (Function)
Returns the numeric value of a character string. This feature enables you to perform numeric calculations on strings.
HBuildKeyValue (Function)
Builds the value of a composite key to implement a filter (HFilter) or to perform a search (HReadSeekFirst, HReadSeekLast, etc.).
ChronoValue (Function)
Indicates the time elapsed (in milliseconds) since the call to ChronoStart.
LocalStorageGet (Function)
Retrieves a value from the local storage.
Val (Function)
Returns the numeric value of a character string.
Operations in a Select query
The query editor allows you to perform operations on the values of an item...
<Array>.Min (Function)
Returns the lowest value in the array.
Min (Function)
Returns the lowest value.
Data persistence
The data persistence is used to store the value typed by the user...
<Array>.Max (Function)
Returns the greatest value in the array.
iMargin (Function)
Defines the "logical" print margins.
ExecuteMainThreadAsynchronous (Function)
Executes a procedure in the main thread of the application without waiting for the end...
Handling Mobile Image Editor controls programmatically
WINDEV Mobile allows you to programmatically handle Mobile Image Editor controls......
Scanning a document (via a WIA driver)
Windows Image Acquisition (WIA) is a Windows device driver interface and API that allows...
HActivateFilter (Function)
Enables the filter that was previously created for the specified data file (view or query).
Creating requirements
The following steps must be performed to implement the requirements......
6. Chart and Pivot Table
WINDEV Tutorial: WINDEV application: Managing data Lesson 6 - Chart and Pivot Table - 30 min
Spreadsheet control in a window
The spreadsheet is one of the most often used business tools. The Spreadsheet control is used...
MyWindow (Reserved word)
MyWindow is used to handle the current window...
Handling the report blocks through programming
Each report block is associated with different events......
HFSQL thumbnails
To optimize the display of images in your application or in your site, you have the ability to use...
WDMap: Viewing records: special cases
This help page presents the special display cases in WDMap......
Managing the replications of HFSQL servers (Control Center)
The HFSQL Control Center is used to create, configure and manage the replications between HFSQL...
Multilingual messages: Convert to new format (version 27 and later)
WINDEV, WEBDEV and WINDEV Mobile have included multilingual project support in many previous...
rssImage (Type of variable)
The rssImage type is used to describe the image of a RSS stream...
NewRecord (Property)
The NewRecord property is used to determine if the record is a new record or if it comes...
PageDisplayDialog (Function)
Displays a page in modal mode. This function is used to establish a dialog with the user. The page...
TabOpen (Function)
Opens a new pane in a Dynamic Tab control.
ocrOption (Type of variable)
The ocrOption type is used to define all the general options of the native OCR (Optical Character...
sysNotificationInput (Type of variable)
The sysNotificationInput type is used to define all the advanced features of an input control,...
State-transition diagram
A state-transition diagram presents a sequence of states that an object goes...
Operator on Address
The & operator returns the address of a variable as an integer
Array management functions
List of functions for managing arrays...
MemSort_55 (Function)
MemSort_55 is kept for backward compatibility.
HReadSeek (Example)
Usage example of the HReadSeek function